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Converting and generalizing maps into compact Scalable Vector Graphics format


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Petkevitch, Valera; Apparicio, Philippe (2006). Converting and generalizing maps into compact Scalable Vector Graphics format Working Paper. Institut national de la recherche scientifique, Montréal.

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Vector formats for Internet, such as Flash and Scalable Vector Graphics (SVG), represent good solutions to deploy rapidly interactive and dynamic maps on Internet. However, without a good level of generalization, the size of vector web-maps can be too large. To remedy this situation, we present, in this paper, a software utility called SVG converter which converts and generalizes vector maps (ESRI shapefiles) into SVG format. The conversion process is based on the combination of modified DouglasPeuker and dictionary based compression algorithms, and keeps the topology of reduced geographical features. The high rates of compression obtained with the SVG converter tool demonstrate that this software utility produces compact and high quality web-maps in SVG format. Consequently, the SVG converter application could easily be integrated into cartographic web-applications to generate “on-the-fly” medium and small sizes maps.

Type de document: Monographie (Working Paper)
Mots-clés libres: cartographie; cartographie interactive; cartes sur Internet; généralisation cartographique; algorithme de Douglas-Peucker; cartography; interactive cartography; map generalization; Douglas-Peucker algorithm; web-maps ; web cartography
Centre: Centre Urbanisation Culture Société
Date de dépôt: 12 nov. 2020 20:31
Dernière modification: 12 nov. 2020 20:31
URI: http://espace.inrs.ca/id/eprint/9380

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